2015 NISSAN TITAN check engine

WARNING
●Your brake system may not be working
properly if the warning light is on. Driv-
ing could be dangerous. If you judge it
to be safe, drive carefully to the nearest
service station for repairs. Otherwise,
have your vehicle towed because driv-
ing it could be dangerous.
● Pressing the brake pedal with the en-
gine stopped and/or a low brake fluid
level may increase your stopping dis-
tance and braking will require greater
pedal effort and pedal travel.
● If the brake fluid level is below the
MINIMUM or MIN mark on the brake
fluid reservoir, do not drive until the
brake system has been checked at a
NISSAN dealer.
Anti-lock Braking System (ABS) warning
indicator
When the parking brake is released and the
brake fluid level is sufficient, if both the brake
warning light and the ABS warning light illumi-
nates, it may indicate the ABS is not functioning
properly. Have the brake system checked, and if
necessary, repaired by a NISSAN dealer
promptly. Avoid high-speed driving and abrupt braking. For additional information, refer to “Anti-
lock Braking System (ABS) warning light” in this
section.
Charge warning light
If this light comes on while the engine is running,
it may indicate the charging system is not func-
tioning properly. Turn the engine off and check
the generator belt. If the belt is loose, broken,
missing, or if the light remains on, see a NISSAN
dealer immediately.
CAUTION
●
Do not ground electrical accessories di-
rectly to the battery terminal. Doing so
will bypass the variable control system
and the vehicle battery may not charge
completely. For additional information,
refer to “Variable voltage control sys-
tem” in the “Maintenance and do-it-
yourself” section of this manual.
● Do not continue driving if the generator
belt is loose, broken or missing
Engine oil pressure low/
Engine coolant temperature
high warning light (if so
equipped)
This light warns of low engine oil pressure or high
engine coolant temperature.
If the light flickers or comes on during normal
driving, pull off the road in a safe area, stop the
engine and allow it to cool. If the light remains on
after checking the oil and coolant, stop the en-
gine immediately and call a NISSAN dealer or
other authorized repair shop.
This light is not designed to indicate a low
oil or low coolant level. Check the oil level with
the dipstick and check the coolant level on the
reservoir. For additional information, refer to “If
your vehicle overheats” in the “In case of emer-
gency” section and “Engine oil” and “Checking
engine coolant level” in the “Maintenance and
do-it-yourself” section of this manual.
2-14Instruments and controls

CAUTION
●Running the engine with the engine oil
pressure warning light on could cause
serious damage to the engine almost
immediately. Such damage is not cov-
ered by warranty. Turn off the engine as
soon as it is safe to do so.
● If the gauge indicates engine coolant
temperature over the normal range,
stop the vehicle as soon as safely pos-
sible. If the engine is overheated, con-
tinued operation of the vehicle may se-
riously damage the engine. For
additional information, refer to “If your
vehicle overheats” in the “In case of
emergency” section for immediate ac-
tion required.
4WD warning light (
model)
The 4WD warning light comes on when the key
switch is turned to ON. It turns off soon after the
engine is started.
If the engine or vehicle is not functioning properly,
the warning light will either remain illuminated or
blink. For additional information, refer to “4WD
warning light” in the “Starting and driving” section
of this manual.
CAUTION
● If the warning light comes on or blinks
during operation, have your vehicle
checked by a NISSAN dealer as soon as
possible.
● Do not drive on dry hard surface roads
in the 4H or 4LO position. If the 4WD
warning light turns on when you are
driving on dry hard surface roads:
– in the 4H position, shift the 4WD shift switch to 2WD.
– in the 4LO position, stop the vehicle, move the shift lever to the N position
with the brake pedal depressed, and
shift the 4WD shift switch to 2WD.
● If the warning light is still on after the
above operation, have your vehicle
checked by a NISSAN dealer as soon as
possible.
Low fuel warning light
This light comes on when the fuel level in the fuel
tank is getting low. Refuel as soon as it is conve-
nient, preferably before the fuel gauge reaches E
(Empty) . There will be a small reserve of fuel
in the tank when the fuel gauge needle
reaches E (Empty) .
Low tire pressure warning light
Your vehicle is equipped with a TPMS that moni-
tors the tire pressure of all tires except the spare.
The low tire pressure warning light warns of low
tire pressure or indicates that the TPMS is not
functioning properly.
After the ignition switch is placed in the ON
position, this light illuminates for about 1 second
and turns off.
Low tire pressure warning:
If the vehicle is being driven with low tire
pressure, the warning light will illuminate.
A CHECK TIRE PRESSURE warning also
appears in the vehicle information dis-
play.If you select the tire pressure informa-
tion in the display (if so equipped) , the LOW
PRESSURE warning message will be dis-
played. The tire pressure for each tire will
also be displayed.
When the low tire pressure warning light
illuminates, you should stop and adjust the
tire pressure of all four tires to the recom-
mended COLD tire pressure shown on the
Tire and Loading Information label located
in the driver’s door opening. The low tire
pressure warning light does not automati-
cally turn off when the tire pressure is ad-
Instruments and controls2-15

WARNING
If the supplemental air bag warning light
is on, it could mean that the front air bag,
side air bag, curtain air bag and/or preten-
sioner systems will not operate in an acci-
dent. To help avoid injury to yourself or
others, have your vehicle checked by a
NISSAN dealer as soon as possible.
INDICATOR LIGHTS
For additional information on warnings and indi-
cators, refer to “Vehicle information display” in
this section.
Electronic locking reardifferential (E-Lock) system on
indicator light (if so equipped)
This light comes on when the electronic locking
rear differential (E-Lock) system clutch is fully
engaged.
The indicator light flashes when the system is first
turned on. When the system fully engages, the
light remains on. If the switch is on and the
indicator light continues to flash, the system is
not engaged.
For additional information, refer to “Electronic
locking rear differential (E-Lock) system switch” in this section and “Electronic locking rear differ-
ential (E-Lock) system” in the “Starting and driv-
ing” section of this manual.
Front fog light indicator light (if
so equipped)
The front fog light indicator light illuminates when
the front fog lights are ON. For additional infor-
mation, refer to “Fog light switch” in this section.
Front passenger air bag statuslight
The front passenger air bag status light will be lit
and the passenger front air bag will be OFF
depending on how the front passenger seat is
being used.
For front passenger air bag status light operation,
refer to “Front passenger air bag and status light”
in the “Safety — Seats, seat belts and supple-
mental restraint system” section of this manual.
High beam indicator light(blue)
This blue light comes on when the headlight high
beams are on and goes out when the low beams
are selected.
The high beam indicator light also comes on
when the passing signal is activated.
Malfunction Indicator Light(MIL)
If this indicator light comes on steady or blinks
while the engine is running, it may indicate a
potential emission control malfunction.
The MIL may also come on steady if the fuel-filler
cap is loose or missing, or if the vehicle runs out
of fuel. Check to make sure the fuel-filler cap is
installed and closed tightly, and that the vehicle
has at least 3 gal (11.4 L) of fuel in the fuel tank.
After a few driving trips, the
light should
turn off if no other potential emission control
system malfunction exists.
If this indicator light comes on steady for 20 sec-
onds and then blinks for 10 seconds when the
engine is not running, it indicates that the vehicle
is not ready for an emission control system
inspection/maintenance test. For additional infor-
mation, refer to “Readiness for
inspection/maintenance (I/M) test” in the “Tech-
nical and consumer information” section of this
manual.
2-18Instruments and controls

Operation
The MIL will come on in one of two ways:● MIL on steady — An emission control system
malfunction has been detected. Check the
fuel-filler cap if the LOOSE FUEL CAP
warning appears in the vehicle information
display. If the fuel-filler cap is loose or miss-
ing, tighten or install the cap and continue to
drive the vehicle. The
light should turn
off after a few driving trips. If the
light
does not turn off after a few driving trips,
have the vehicle inspected by a NISSAN
dealer. You do not need to have your vehicle
towed to the dealer.
● MIL blinking — An engine misfire has been
detected which may damage the emission
control system. To reduce or avoid emission
control system damage:
– do not drive at speeds above 45 MPH (72 km/h).
– avoid hard acceleration or deceleration.
– avoid steep uphill grades.
– if possible, reduce the amount of cargo being hauled or towed. The MIL may stop blinking and come on steady.
Have the vehicle inspected by a NISSAN dealer.
You do not need to have your vehicle towed to the
dealer.
CAUTION
Continued vehicle operation without hav-
ing the emission control system checked
and repaired as necessary could lead to
poor driveability, reduced fuel economy,
and possible damage to the emission con-
trol system.
Security indicator light (if so
equipped)
This light blinks whenever the ignition switch is in
the LOCK, OFF or ACC position. This function
indicates the security system equipped on the
vehicle is operational.
For additional information, refer to “Security sys-
tems” in this section.
Slip indicator light
This indicator will blink when the Vehicle Dynamic
Control (VDC) system or the Traction Control
System (TCS) is operating, thus alerting that the
vehicle is nearing its traction limits. The road
surface may be slippery.
Turn signal/hazard indicatorlights
The appropriate light flashes when the turn signal
switch is activated.
Both lights flash when the hazard switch is turned
on.
Vehicle Dynamic Control(VDC) off indicator light
This indicator light comes on when the VDC off
switch is pushed to OFF, the transfer case is in
the 4LO position (
model) , or when the
VDC system is not functioning properly. This
indicates the VDC system is not operating.
Push the VDC off switch again or restart the
engine and the system will operate normally. For
additional information, refer to “Vehicle Dynamic
Control (VDC) system” in the “Starting and driv-
ing” section of this manual.
The VDC light also comes on when you place the
ignition switch in the ON position. The light will
turn off after about 2 seconds if the system is
operational. If the light stays on or comes on
along with the
indicator light while you are
driving, have the VDC system checked by a
NISSAN dealer.
Instruments and controls2-19

Door open warning
This warning illuminates when a door has been
opened and the engine is running.
Low fuel warning
This warning illuminates when the fuel level in the
fuel tank is getting low. Refuel as soon as it is
convenient, preferably before the fuel gauge
reaches E (Empty) .There will be a small re-
serve of fuel in the tank when the fuel
gauge needle reaches E (Empty) .
Low windshield-washer fluid warning
This warning illuminates when the windshield-
washer fluid is at a low level. Add windshield-
washer fluid as necessary. For additional informa-
tion, refer to “Windshield-washer fluid” in the
“Maintenance and do-it-yourself” section of this
manual.
Parking brake warning
This warning illuminates when the parking brake
is set and the vehicle is driven.
Cruise main switch indicator (if so
equipped)
This indicator illuminates when the cruise control
main switch is pushed. The indicator turns off
when the main switch is pushed again. When the cruise main switch indicator illuminates, the
cruise control system is operational.
Cruise set switch indicator (if so
equipped)
This indicator illuminates while the vehicle speed
is controlled by the cruise control system. If the
indicator blinks while the engine is running, it may
indicate the cruise control system is not function-
ing properly. Have the system checked by a
NISSAN dealer.
Transfer 4LO position indicator (
model)
This indicator illuminates when the 4WD shift
switch is set in the 4LO position with the ignition
switch placed in the ON position.
If the 4WD shift switch is set in the 4LO position
and the indicator blinks, stop the vehicle, drive
slowly forward and the indicator will turn on.
When you shift between 4H and 4LO, stop the
vehicle, move the shift lever to the N (Neutral)
position, then depress and turn the 4WD shift
switch to 4LO or 4H.
The transfer case may be damaged if you shift the
switch while driving.
You cannot move the transfer 4WD shift switch
between 4H and 4LO unless you have firststopped the vehicle and moved the shift lever to
N (Neutral) . Make sure the transfer 4LO position
indicator illuminates when you shift the 4WD shift
switch to 4LO.
The indicator may blink while shifting from
one drive mode to the other.
4WD shift indicator (
model)
While the engine is running, the 4WD shift indi-
cator will illuminate the position selected by the
4WD shift switch.
The 4WD shift indicator may blink while
shifting from one drive mode to the other.
Automatic transmission position indicator
When the ignition switch is placed in the ON
position, this indicator shows the shift lever posi-
tion. For additional information, refer to “Driving
the vehicle” in the “Starting and driving” section
of this manual.
Loose fuel cap warning
This warning appears when the fuel-filler cap is
not tightened correctly after the vehicle is refu-
eled. For additional information, refer to “Fuel-
filler cap” in the “Pre-driving checks and adjust-
ments” section of this manual.
2-26Instruments and controls

Key fob operation:
●Push the
button on the key fob.
All doors lock. The hazard lights flash
twice and the horn beeps once to indicate
all doors are locked.
● When the
button is pushed with
all doors locked, the hazard lights flash
twice and the horn beeps once as a re-
minder that the doors are already locked.
The horn may or may not beep. For addi-
tional information, refer to “Silencing the
horn beep feature” (vehicles without naviga-
tion system) in the “Pre-driving checks and
adjustments” section of this manual.
4. Confirm that the
indicator light comes
on. The
light stays on for about
30 seconds. The vehicle security system is
now pre-armed. After about 30 seconds the
vehicle security system automatically shifts
into the armed phase. The
light begins
to flash once every 3 seconds. If, during the
30-second pre-arm time period, the door is
unlocked by the key or the key fob, or the
ignition switch is placed to ACC or ON, the
system will not arm. ●
If the key is turned slowly when locking
the door, the system may not arm. Fur-
thermore, if the key is turned beyond
the vertical position toward the unlock
position to remove the key, the system
may be disarmed when the key is re-
moved. If the indicator light fails to
glow for a period of time, unlock the
door once and lock it again.
●
Even when the driver and/or passengers
are in the vehicle, the system will arm
with all doors closed and locked with the
ignition switch in the OFF position.
● The lockable bedside storage compart-
ment (if so equipped) is not protected
by the vehicle security system.
Vehicle security system activation
The vehicle security system will give the following
alarm:
● The headlights blink and the horn sounds
intermittently.
● The alarm automatically turns off after a pe-
riod of time. However, the alarm reactivates if
the vehicle is tampered with again. The alarm
can be shut off by unlocking the driver’s door
with the key or by pressing the
button
on the key fob. The alarm is activated by:
● Opening a door without using the key or key
fob (even if the door is unlocked by using the
inside lock knob or the power door lock
switch) .
How to stop an activated alarm
The alarm stops only by unlocking the driver’s
door with the key or by pressing the
button
on the key fob.
NISSAN VEHICLE IMMOBILIZER
SYSTEM (if so equipped)
The NISSAN Vehicle Immobilizer System will not
allow the engine to start without the use of a
registered key.
If the engine fails to start using a registered key
(for example, when interference is caused by
another registered key, an automated toll road
device or automatic payment device on the key
ring) , restart the engine using the following pro-
cedures:
1. Leave the ignition switch in the ON position for approximately 5 seconds.
2. Turn the ignition switch to the OFF or LOCK position, and wait approximately 10 sec-
onds.
2-28Instruments and controls

●If any malfunctions are found or the
heated seat does not operate, turn the
switch off and have the system checked
by your NISSAN dealer.
● The battery could run down if the seat
heater is operated while the engine is
not running.
The vehicle should be driven with the VDC sys-
tem on for most driving conditions.
If the vehicle is stuck in mud or snow, the VDC
system reduces the engine output to reduce
wheel spin. The engine speed will be reduced
even if the accelerator is depressed to the floor. If
maximum engine power is needed to free a stuck
vehicle, turn the VDC system off.
To turn off the VDC system, push the VDC OFF
switch. The
indicator will come on.
Push the VDC OFF switch again or restart the
engine to turn on the system. For additional infor-
mation, refer to “Vehicle Dynamic Control (VDC)
system” in the “Starting and driving” section of
this manual. The Electronic Locking Rear Differential (E-Lock)
system can help provide added traction if the
vehicle is stuck or becoming stuck.
To activate the E-Lock system:
● the 4WD switch must be in the 4LO position
(4-wheel drive vehicles) ,
● the vehicle must be stopped or moving at
4 MPH (7 km/h) or less, and
● the E-Lock system switch must be turned
ON.
LIC1548LIC0729
VEHICLE DYNAMIC CONTROL (VDC)
OFF SWITCH ELECTRONIC LOCKING REAR
DIFFERENTIAL (E-Lock) SYSTEM
SWITCH (if so equipped)
Instruments and controls2-39

CAUTION
●Use power outlets with the engine run-
ning to avoid discharging the vehicle
battery.
● Do not attempt to use this while driving.
● Do not use double adapters or more
than one electrical accessory, doing so
could significantly drain the battery of
your vehicle.
WARNING
The rear sonar system is a convenience
but it is not a substitute for proper back-
ing. Always turn and check that it is safe to
do so before backing up. Always back up
slowly.
The rear sonar system is active when the ignition
switch is placed to the ON position and the shift
lever is in R (Reverse) .
When sensors detect obstacles within 5.9 ft
(1.8 m) of the rear bumper, a beeping tone is
emitted. The rear sonar system can be disabled by push-
ing the OFF switch. When the system is disabled,
the indicator light on the switch will illuminate.
Push the switch again to enable the system. The
indicator light will go off.
The system will automatically reset the next time
the ignition switch is turned on.
For additional information, refer to “Rear sonar
system” in the “Starting and driving” section.
LIC0471
REAR SONAR SYSTEM OFF SWITCH
(if so equipped)
Instruments and controls2-41